fix: map ink transparency to SVG opacity

src/components/PageReader.test.tsx

@@ -82,6 +82,7 @@ const page: OneNotePageDto = {
           ],
           width: 2,
           color: 0xff0000,
+          transparency: 255,
         },
       ],
       children: [],
@@ -127,6 +128,10 @@ describe('PageReader structured content', () => {
       'd',
       'M 10 20 L 15 25 30 40'
     );
+    expect(document.querySelector('.onenote-ink path')).toHaveAttribute(
+      'stroke-opacity',
+      '0'
+    );
     await waitFor(() =>
       expect(
         screen.getByRole('img', { name: 'Embedded diagram' })